551560511611 has 4 divisors (see below), whose sum is σ = 551577621672. Its totient is φ = 551543401552.

The previous prime is 551560511599. The next prime is 551560511617. The reversal of 551560511611 is 116115065155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551560511611 - 2⁷ = 551560511483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551560511617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8506585 + ... + 8571178.

It is an arithmetic number, because the mean of its divisors is an integer number (137894405418).

Almost surely, 2^551560511611 is an apocalyptic number.

551560511611 is a deficient number, since it is larger than the sum of its proper divisors (17110061).

551560511611 is a wasteful number, since it uses less digits than its factorization.

551560511611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17110060.

The product of its (nonzero) digits is 22500, while the sum is 37.

Adding to 551560511611 its reverse (116115065155), we get a palindrome (667675576766).

The spelling of 551560511611 in words is "five hundred fifty-one billion, five hundred sixty million, five hundred eleven thousand, six hundred eleven".